
Guys ok ok hear me out. I think the both stalkers are the same person like he has multiple personalities. On page 17 of chapter 28 at the bottom of the page you see he's sitting by himslef talking. He likes the same type of guys which are black hair men cuz the MC and his co worker do look something alike. So yes I think it's the same person with multiple personalities and changes his appearance for that personality something like Spilt the movie. ..that's my take .
I wish you people in the comments would stop saying Hyesung did not care about Byul but now he does like shut the fuck up it's not that he didn't care he just didn't grown up with love so he was afraid he would be just like his parents. He obviously loved Byul that's why he didn't leave the country without seeing for himself Byul wasn't given away. Byul is his baby! He made him! And he always loved him so stop with the fucking stupid ass comments he's just being what he a fucking awesome mother